Search found 23 matches

by KRIKzz
Thu Jul 02, 2020 9:57 am
Forum: Mega/SegaCD
Topic: mcd-verificator (CD core accuracy tests)
Replies: 2
Views: 71

Re: mcd-verificator (CD core accuracy tests)

Hm, checksums looks ok. which one is bad?
9+F+5 ^ F = 2
9+F+1 ^ F = 6
by KRIKzz
Wed Jul 01, 2020 12:13 am
Forum: Mega/SegaCD
Topic: mcd-verificator (CD core accuracy tests)
Replies: 2
Views: 71

mcd-verificator (CD core accuracy tests)

During cd core development i spent lot of time on figuring out how mega-cd actually works, some of my conclusions reflected in mcd-verificator diagnostics tool. I share it with hope that it will help to make better CD emulators (:

https://github.com/krikzz/MEGA-PRO/tree ... erificator
by KRIKzz
Tue Jun 30, 2020 11:17 pm
Forum: Mega/SegaCD
Topic: Diagnostic Software
Replies: 1
Views: 1758

Re: Diagnostic Software

https://github.com/krikzz/MEGA-PRO/tree ... erificator

Try this thing if you have some flashcart. It tests pretty much everything. If it not start at all then sub cpu or wram likely broken.
by KRIKzz
Thu Mar 02, 2017 10:53 pm
Forum: Megadrive/Genesis
Topic: Mega Everdrive USB programming
Replies: 6
Views: 2504

Re: Mega Everdrive USB programming

Ive done a server/client test sometime back. Although its hacky I can share some of the code if you wish. Server is written in C# and client in ASM. I used this to test streaming music files, but the connection is too slow or unreliable to work properly. Actually it should be fast enough for music ...
by KRIKzz
Wed Nov 13, 2013 3:11 pm
Forum: Demos
Topic: wolfenstein demo for sega genesis
Replies: 361
Views: 162151

Really impressive! Genny doing the work of i286 machine, which is much more powerful. Blast processing he he (:
by KRIKzz
Sun Dec 18, 2011 1:04 pm
Forum: Demos
Topic: Hello World
Replies: 5
Views: 3389

letoulousain wrote:Congratulations ! That's one small step for a man, one giant...
... leap for mankind.
my first md program was a jumping bear (:
by KRIKzz
Sun Dec 18, 2011 12:40 pm
Forum: Hardware
Topic: Add a pause button to the super magic drive for sms games...
Replies: 2
Views: 3675

Re: Add a pause button to the super magic drive for sms game

Hi all, I'm a super magic drive owner ( 2 units 16 & 24 meg) , and playing some sms game on it . As some people know , the smd has a lack of the sms pause function , very annoying with some games. I was looking at the power base converter schematics http://devster.monkeeh.com/segapage.html and thin...
by KRIKzz
Tue Jun 28, 2011 5:22 pm
Forum: Hardware
Topic: USB MegaDrive DevKit
Replies: 32
Views: 28838

prophet36 i wonder if your memory controller enough fast for 32x? while ago i used altera DE1 for build similar thing, genesis games works fine, but 32x unfortunately not. i tried to count write/read period for 32x and looks like 32x has twice more fast r/w timings than genesis dma. my first sdram ...
by KRIKzz
Fri Feb 04, 2011 10:50 am
Forum: Hardware
Topic: z80 ram in sms mode (genesis)
Replies: 2
Views: 3926

z80 ram in sms mode (genesis)

i make a dump of z80 ram in sms mode and i detected code of everdrive OS in this memory. WTF i was thinking (: so now i know that z80 in sms mode not use own 8kb ram, it use m68k ram begining from upper 32k. i always was assured that z80 use own ram in sms mode. by this reason i have had a problems ...
by KRIKzz
Mon Jan 10, 2011 7:41 am
Forum: Blabla
Topic: hai
Replies: 2
Views: 1897

Re: hai

Rawan wrote:hai all i am rawan
awesome!
by KRIKzz
Sat Jan 01, 2011 3:44 am
Forum: Hardware
Topic: Everdrive-MD Flash Cart
Replies: 24
Views: 24319

notaz wrote:
HardWareMan wrote: 10. 6MBytes ROM support (for example Kabal UMK3 hack)!
Hmh, doesn't that mean it always responds above 400000, what could cause problems with SegaCD?
there is no any problems with CD unit because looks like this cart just have not any features for mega cd (!CART wire just shorted to GND)
by KRIKzz
Mon Jul 12, 2010 1:25 am
Forum: Demos
Topic: Super Mario Bros on the Genesis
Replies: 58
Views: 26664

mario for genny? damn, it is my dream! (:
by KRIKzz
Sun Mar 21, 2010 12:50 pm
Forum: Hardware
Topic: i have released my everdrive MD flashcart for SEGA
Replies: 17
Views: 38270

revision 2.0 now!
by KRIKzz
Tue Mar 02, 2010 2:20 am
Forum: Hardware
Topic: i have released my everdrive MD flashcart for SEGA
Replies: 17
Views: 38270

ROM memory based on m29w640, it is flash, 8mb, but only half of this chip used for ROM That is a 3.3V supply part with an absolute max supply voltage of 4V. I assume you've used a 3.3V regulator for supply, but I don't see any level shifters in your pictures and the IO isn't 5V tolerant. How does i...
by KRIKzz
Mon Mar 01, 2010 3:57 am
Forum: Hardware
Topic: i have released my everdrive MD flashcart for SEGA
Replies: 17
Views: 38270

KRIKzz, is possible to replace the OS (boot, menu, etc...) with custom one? (to enjoy personal graphics, for example) yes, but be careful. cart will be damaged if you replace main and reserve copy of OS by some inoperative. for restore, in this case, must be used external device, for reprogram bios...